从桌面拖放并在Windows窗体中删除表单不起作用？ [英] Drag From Desktop and Drop in windows Form not working?

问题描述

你好，

我正在开发一个Windows应用程序，我正在将我的小拖放功能添加到我的窗体中

这是场景

- 我得到了带有文本框的窗体

- 我想从桌面拖出一些东西说文字或文件名或文件夹

并放入我的Testbox
- 我设置TextboxTrue的Allow-Drop属性

这里是我的代码

Hallo,
I m developing a windows application where i am iplemeneting small Drag and Drop function to my windows form
Here is the scenarios
--I got windows Form with Text boxes
-Now i want to Drag something from Desktop say text or filename or folder
and Drop in my Testbox
--i set Allow-Drop Property of my TextboxTrue
here is my code

   private void Mainform_Load(object sender, EventArgs e)
     {
         txtbx_def.AllowDrop = true;
         txtbx_def.DragEnter += new DragEventHandler(Def_DragEnter);
         txtbx_def.DragDrop += new DragEventHandler(Def_DragDrop);

     }

private void txtbx_def_DragDrop(object sender, DragEventArgs e)
    {
        txtbx_def.Text = e.Data.GetData(DataFormats.Text).ToString();

    }

    private void txtbx_def_DragEnter(object sender, DragEventArgs e)
    {

        if (e.Data.GetDataPresent(DataFormats.Text))
        {
            e.Effect = DragDropEffects.Copy;

        }
        else
        {
            e.Effect = DragDropEffects.None;
        }

    }

但即便是事件也不是Trigerred为什么????

它无法正常工作

But even the event is not Trigerred why????
It is not working

推荐答案

其中一个事件可能会触发：DragEnter事件。

但是得到了什么从桌面拖出的不是文本 - 它的文件。所以试试这个：

The chances are that one of the events is firing: the DragEnter event.
But what gets dragged from the desktop is not text - it's files. So try this:

private void textBox1_DragEnter(object sender, DragEventArgs e)
    {
    if (e.Data.GetDataPresent(DataFormats.FileDrop))
        {
        e.Effect = DragDropEffects.Copy;

        }
    else
        {
        e.Effect = DragDropEffects.None;
        }
    }

您应该会发现DragDrop事件现在被触发。

You should find the DragDrop event gets triggered now.

尝试两者似乎都不能正常工作

tried both seems not working at all unfortunately

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